package heng926;

import java.util.Scanner;

/**
 * @author tmh
 * @date 2024/9/26 20:20
 * @description
 */
public class T2 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextInt()) { // 注意 while 处理多个 case
            int n = in.nextInt();
            int k = in.nextInt();
            int[] array = new int[n];
            for(int i =0;i<n;i++){
                array[i]=in.nextInt();
            }
            System.out.println(-1);
        }
    }
}
